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Algebraic construction of equivariant oriented cohomology of flag varieties I-I
[대수기하학 세미나]
Date: 2017-11-13
Speaker : Changlong Zhong (University at Albany - SUNY)
Abstract : I will introduce the concept of oriented cohomology in the sense of Levine and Morel, and the work of Kostant and Kumar on algebraic construction of singular cohomology and Grothendieck group of flag varieties. Then I will introduce the formal group algebra of Calmes-Petrov-Zainoulline, which is the algebraic replacement of T-equivariant oriented cohomology of a point. I will introduce the definition of formal affine Demazure algebra and sketch the proof of the structure theorem.
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